Amongst the following, identify the condensation polymer/s:

(A) Bakelite

(B) Teflon

(C) Melamine formaldehyde resin

(D) Nylon-2 nylon-6

(E) Buna-S

Choose the correct answer from the options given below:

(A), (C) and (D) only

The correct answer is option 2. (A), (C) and (D) only.

Condensation polymers are formed by the condensation reaction between monomers, during which small molecules like water, alcohol, or acid are eliminated. Let's identify the condensation polymers from the options provided:

(A) Bakelite: Bakelite is a phenol-formaldehyde resin, which is a condensation polymer formed by the reaction between phenol and formaldehyde.

(B) Teflon: Teflon is not a condensation polymer. It is a polytetrafluoroethylene polymer and is formed by addition polymerization.

(C) Melamine formaldehyde resin: Melamine formaldehyde resin is a condensation polymer formed by the reaction between melamine and formaldehyde.

(D) Nylon-2 nylon-6: Nylon-2 nylon-6 is not a condensation polymer. It is a copolymer formed by the polymerization of two different monomers, caprolactam (for nylon-6) and amino-caproic acid (for nylon-2), through a condensation polymerization process.

(E) Buna-S: Buna-S is a copolymer of butadiene and styrene, which is formed by addition polymerization, not condensation.

Based on the analysis, the correct answer is: (2) (A), (C) and (D) only.